What was found
THE AIRCRAFT WAS GROUNDED. AT FL250 ON CLIMBOUT, RT ENGINE EGT WENT INTO RED ZONE WITH A HIGH EGT. DET FIRE ENG R EICAS MESSAGE. RT EGT INDICATED, THEN INDICATED A LOW EGT OF 346 DEG. THE FLIGHT DECLARED AN EMERGENCY AND RETURNED TO KMIA WITHOUT FURTHER INCIDENT. FOUND BLOWN BORESCOPE PLUG ON RT ENG. REPLACED PLUG AND REPLACED RT ENGINE LT REVERSER HALF IAW 78-94-10. ALSO REPLACED MANY PARTS DUE TO EXCESSIVE HEAT. OK FOR SERVICE.